Add line numbers and an arrow to a string of code that points to a specific location.

npm install pinpoint

With this code:

function add(left, right) {
  return left   right;
}

console.log(add(1   1));

When being asked to point to line 2 and column 2, generates this:

1| function add(left, right) {
2|   return left   right;
-----^
3| }
4|
5| console.log(add(1   1));

var pinpoint = require('pinpoint');

var str = pinpoint(code, options);

• code - a string of code
• options - an object literal supports these options:
  • line - the line number to point to, 1-based.
  • column - the column number to point to, 1-based.
  • showLines - the number of lines to show. The pointed line will try to stay in the middle of the displays lines.
  • indent - indent string prepend to each line, before the line number.
  • tabSize - width of a tab character.